Display screen with a transitional graphical user interface



FIG. 1 is a front view of a first image of a display screen with a transitional graphical user interface;

FIG. 2 is a front view of a second image thereof;

FIG. 3 is a front view of a third image thereof;

FIG. 4 is a front view of a fourth image thereof;

FIG. 5 is a front view of a fifth image thereof;

FIG. 6 is a front view of a sixth image thereof;

FIG. 7 is a front view of a seventh image thereof;

FIG. 8 is a front view of an eighth image thereof;

FIG. 9 is a front view of a ninth image thereof; and,

FIG. 10 is a front view of a tenth image thereof.

The appearance of the graphical user interface transitions between the images shown in FIGS. 1-10. The process or period in which one image transitions to another image forms no part of the claimed design. The dot-dash broken lines in the drawings illustrate a display screen while even broken lines illustrate portions of the graphical user interface. No subject matter shown in any of the aforementioned styles of broken lines form part of the claimed design. 

CLAIM The ornamental design for a display screen with a transitional graphical user interface, as shown and described. 